EP 2169080 B1 20110427 - Aldehyde Scrubbing in Crust Leather and Tanned Leather
Title (en)
Aldehyde Scrubbing in Crust Leather and Tanned Leather
Title (de)
Aldehyd-Entfernung bei Crustleder und gegerbtem Leder
Title (fr)
Elimination d'aldéhyde sur cuir en croûte et cuir tanné
Publication
Application
Priority
US 19188508 P 20080912
Abstract (en)
[origin: EP2169080A1] The present invention provides aqueous flesh coating compositions comprising one or more aqueous acid-functional acrylic or vinyl copolymer and from 0.03 and up to 1.0 equivalent, based on equivalents of carboxylic acid in the polymer, of one or more active compound chosen from an aminoguanidine, semicarbazide, dihydrazide, guanamine, hydrazine and a salt thereof. Further, the invention provides methods of applying the coating composition to leather crust or to tanned leather, and to the flesh coated leather or coated leather crust produced thereby. The leather crust and tanned leather produced by the invention, for example fleshcoated or finished leather, will emit greatly reduced levels of aldehydes over time and especially valuable in scrubbing aldehydes from perforated leather for automotive use.
IPC 8 full level
C08F 220/18 (2006.01); C09D 133/02 (2006.01); C09D 133/12 (2006.01); C14C 11/00 (2006.01)
CPC (source: EP KR US)
C09D 133/08 (2013.01 - EP US); C09D 139/00 (2013.01 - KR); C14C 11/003 (2013.01 - EP US); C08F 220/06 (2013.01 - EP US); C08K 5/31 (2013.01 - EP US)
Designated contracting state (EPC)
DE IT
DOCDB simple family (publication)
EP 2169080 A1 20100331; EP 2169080 B1 20110427; BR PI0904382 A2 20100720; BR PI0904382 B1 20201110; CN 101671512 A 20100317; CN 101671512 B 20140115; DE 602009001165 D1 20110609; JP 2010065218 A 20100325; JP 4794017 B2 20111012; KR 101031002 B1 20110425; KR 20100031470 A 20100322; MX 2009009827 A 20100430; US 2010068541 A1 20100318; US 9212402 B2 20151215
DOCDB simple family (application)
EP 09156195 A 20090325; BR PI0904382 A 20090911; CN 200910174784 A 20090911; DE 602009001165 T 20090325; JP 2009189891 A 20090819; KR 20090084816 A 20090909; MX 2009009827 A 20090911; US 58476009 A 20090911